Friday, 25 September 2026

HDI 2204220 3014 501 FD Choke Position Indicator MS3106E14S for Hazardous Locations

 In hazardous industrial environments where flammable gases, vapors, or dusts may be present, every component must meet rigorous safety standards to prevent ignition and ensure personnel protection. The HDI 2204220 3014 501 FD Choke Position Indicator is a specialized instrument engineered specifically for such demanding applications, providing accurate position feedback in Class I hazardous locations while maintaining the highest levels of safety and reliability.

Position indicators play a vital role in process control systems by providing real-time feedback on the position of valves, chokes, dampers, and other mechanical equipment. In oil and gas production, petrochemical processing, and other industries handling flammable materials, this position information is essential for safe and efficient operation. The HDI Instruments 2204220 3014 501 FD meets this critical need with explosion-proof construction rated for Class I, Groups A, B, C, and D hazardous environments, making it suitable for the most dangerous industrial locations.

At Auto2mation Pvt. Ltd., we specialize in supplying certified industrial equipment for the most challenging applications. The HDI 2204220 choke position indicator is offered in new condition with our standard 30-day warranty and free worldwide shipping. Our technical team understands the requirements of hazardous location equipment and can assist you in selecting the right position sensing solutions for your safety-critical applications.

Key Features & Specifications of the HDI 2204220 Choke Position Indicator

The HDI 2204220 3014 501 FD Choke Position Indicator incorporates safety-certified design and robust construction to deliver reliable position feedback in hazardous environments. Here are the key features that make this instrument a trusted choice for safety-critical applications:

  • Class I Hazardous Location Rating: Certified for Class I, Groups A, B, C, and D hazardous locations, covering the full range of flammable gas and vapor environments from acetylene (Group A) to propane (Group D).
  • High Ambient Temperature Rating: Designed for maximum ambient temperatures up to 60 degrees Celsius, ensuring reliable operation in hot industrial environments and tropical climates.
  • MS3106E14S Connector: Equipped with a standard MS3106E14S military-style connector that provides secure, vibration-resistant electrical connections suitable for industrial and offshore applications.
  • Choke Position Sensing: Specifically designed to monitor the position of choke valves and similar flow control devices, providing essential feedback for process control and safety systems.
  • Explosion-Proof Construction: The rugged housing is designed to contain any internal explosion and prevent ignition of the surrounding hazardous atmosphere, meeting the stringent requirements of explosion-proof equipment standards.
  • Trusted Manufacturer: Manufactured by HDI Instruments, LLC, a specialist in hazardous location instrumentation with extensive experience in oilfield and petrochemical applications.

Applications & Use Cases

The HDI 2204220 Choke Position Indicator is engineered for critical position sensing applications in hazardous environments where safety certification is mandatory. Its primary application areas include:

Oil and Gas Wellhead Control

On oil and gas production wellheads, choke valves regulate the flow of hydrocarbons from the reservoir to surface processing facilities. The HDI position indicator provides real-time feedback on choke valve position, enabling operators to monitor and control production rates while maintaining safe operating pressures. The Class I hazardous location rating is essential in these environments where natural gas and crude oil vapors are routinely present.

Petrochemical Processing Plants

Refineries and petrochemical facilities handle a wide range of flammable gases and liquids that require precise flow control. The HDI choke position indicator monitors control valve positions throughout these facilities, providing the process control system with essential feedback for safe and efficient operation. The Groups A, B, C, and D rating covers all flammable materials commonly encountered in petrochemical processing.

Offshore Platform Safety Systems

Offshore oil and gas platforms operate in some of the most hazardous environments on Earth, combining flammable hydrocarbons with corrosive salt air and extreme weather conditions. The HDI 2204220’s explosion-proof construction and robust connector make it suitable for these demanding marine applications where equipment reliability is literally a matter of life and death.

Gas Distribution and Storage Facilities

Natural gas processing plants, LNG facilities, and gas storage terminals require precise flow control and position monitoring at every stage of the distribution chain. The HDI position indicator provides the certified safety and accurate feedback these critical infrastructure facilities demand.

Chemical Processing and Specialty Gases

Chemical plants producing or handling hydrogen, acetylene, ethylene, and other highly flammable gases benefit from the HDI indicator’s Class I, Group A rating, which covers even the most easily ignitable gas atmospheres. The 60-degree Celsius ambient temperature rating ensures reliable operation in hot process environments.

Only 1 Unit Remaining

The HDI 2204220 Choke Position Indicator is a specialized hazardous location instrument with very limited availability. Secure this safety-critical component for your facility today.

Why Choose the HDI 2204220 Choke Position Indicator

When specifying position sensing equipment for hazardous locations, safety certification and proven reliability are non-negotiable requirements. The HDI 2204220 3014 501 FD offers several compelling advantages for these critical applications:

Comprehensive Hazardous Location Coverage

The Class I, Groups A, B, C, and D rating provides the broadest coverage of flammable gas environments. Group A covers acetylene, Group B covers hydrogen, Group C covers ethylene and cyclopropane, and Group D covers propane, butane, and natural gas. This comprehensive rating means a single HDI indicator model can be deployed across virtually any hazardous location without concern for gas group compatibility.

High Temperature Tolerance

The 60-degree Celsius maximum ambient temperature rating exceeds that of many competing instruments, making the HDI 2204220 suitable for installations in hot climates, near process equipment, and in enclosed spaces where heat buildup may occur. This temperature capability reduces the need for auxiliary cooling or specialized installation arrangements.

Military-Grade Connector Reliability

The MS3106E14S connector is a proven military specification connector that provides exceptional resistance to vibration, moisture, and mechanical stress. In industrial and offshore environments where equipment is subjected to constant vibration and rough handling, this connector ensures reliable electrical connections that won’t loosen or fail over time.

Specialized Application Expertise

HDI Instruments specializes in position sensing equipment for hazardous location applications. This focused expertise means their products are designed from the ground up for the specific challenges of oilfield, petrochemical, and industrial safety applications, rather than being adapted from general-purpose instrumentation.

Compatibility & Integration

The HDI 2204220 Choke Position Indicator is designed for integration with industrial control systems and safety instrumented systems (SIS) in hazardous location installations. Key integration considerations include:

  • MS3106E14S Connector Interface: The military-specification connector provides a standardized connection point compatible with industrial cable assemblies and junction boxes rated for hazardous location use.
  • Analog or Digital Output: The position indicator provides an electrical signal proportional to choke valve position that can be interfaced with PLCs, DCS systems, SCADA platforms, and safety shutdown systems.
  • Explosion-Proof Enclosure Compatibility: The instrument housing is designed for installation in explosion-proof conduit systems and junction boxes that meet NEC and IEC standards for hazardous location wiring methods.
  • Safety Instrumented Systems: The HDI indicator can be integrated into SIL-rated safety instrumented systems where choke valve position monitoring is required as part of a safety function.

Maintenance & Support

The HDI 2204220 Choke Position Indicator is designed for long service life with minimal maintenance requirements in demanding industrial environments. Periodic inspection of the enclosure and connector for physical damage, corrosion, or loosening is recommended as part of routine maintenance programs. All maintenance on hazardous location equipment must be performed by qualified personnel in accordance with applicable safety standards and local regulations.

At Auto2mation, we provide full support for the HDI 2204220 position indicator, including our standard 30-day warranty and free worldwide shipping. Our technical team can assist with product selection questions, installation guidance, and integration recommendations. We understand the critical nature of hazardous location equipment and are committed to helping our customers maintain the highest levels of safety and compliance in their operations.

Frequently Asked Questions

Q1: What does the Class I, Groups A,B,C,D rating mean?

Class I indicates the equipment is rated for hazardous locations where flammable gases or vapors are present. Groups A, B, C, and D cover all common flammable gases: Group A (acetylene), Group B (hydrogen), Group C (ethylene), and Group D (propane, butane, natural gas). This rating means the HDI 2204220 can be safely used in virtually any flammable gas environment.

Q2: What is the MS3106E14S connector?

The MS3106E14S is a military specification circular connector that provides a rugged, vibration-resistant electrical connection. It is widely used in industrial and aerospace applications where connector reliability under harsh conditions is essential.

Q3: What is the maximum ambient temperature for this position indicator?

The HDI 2204220 Choke Position Indicator is rated for maximum ambient temperatures up to 60 degrees Celsius (140 degrees Fahrenheit), making it suitable for hot industrial environments and tropical climates.

Q4: Is this HDI position indicator new or used?

This HDI 2204220 3014 501 FD Choke Position Indicator is offered in new condition by Auto2mation, complete with our 30-day warranty and free worldwide shipping.

Q5: What industries commonly use the HDI choke position indicator?

The HDI choke position indicator is primarily used in oil and gas production, petrochemical processing, offshore platforms, gas distribution facilities, chemical plants, and any other industry where hazardous location-rated position sensing is required for safety and process control.

Q6: What does the MS3106E14S connector specification indicate?

The MS3106E14S is a MIL-SPEC circular connector with a size 14 shell and S-type polarized keying. It provides multiple contact positions for power and signal connections, with a threaded coupling mechanism that ensures secure mating even under vibration.

Q7: What warranty and support does Auto2mation provide?

Auto2mation provides a 30-day warranty on this HDI position indicator along with free worldwide shipping. Our technical support team is available to assist with product selection, installation guidance, and any questions you may have about hazardous location equipment requirements.

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